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* Copyright 2018 The Android Open Source Project
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#pragma once
#include <layerproto/LayerProtoHeader.h>
#include <layerproto/LayerProtoParser.h>
#include <mutex>
#include <unordered_map>
using namespace android::surfaceflinger;
namespace android {
class LayerStats {
void enable();
void disable();
void clear();
bool isEnabled();
void logLayerStats(const LayersProto& layersProto);
void dump(std::string& result);
// Traverse layer tree to get all visible layers' stats
void traverseLayerTreeStatsLocked(
const std::vector<LayerProtoParser::Layer*>& layerTree,
const LayerProtoParser::LayerGlobal& layerGlobal,
std::vector<std::string>* const outLayerShapeVec);
// Convert layer's top-left position into 8x8 percentage of the display
static const char* destinationLocation(int32_t location, int32_t range, bool isHorizontal);
// Convert layer's size into 8x8 percentage of the display
static const char* destinationSize(int32_t size, int32_t range, bool isWidth);
// Return the name of the transform
static const char* layerTransform(int32_t transform);
// Return the name of the composition type
static const char* layerCompositionType(int32_t compositionType);
// Return the name of the pixel format
static std::string layerPixelFormat(int32_t pixelFormat);
// Calculate scale ratios of layer's width/height with rotation information
static std::string scaleRatioWH(const LayerProtoParser::Layer* layer);
// Calculate scale ratio from source to destination and convert to string
static const char* scaleRatio(int32_t destinationScale, int32_t sourceScale);
// Bucket the alpha into designed buckets
static const char* alpha(float a);
// Return whether the original buffer is rotated in final composition
static bool isRotated(int32_t transform);
// Return whether the original buffer is V-flipped in final composition
static bool isVFlipped(int32_t transform);
// Return whether the original buffer is H-flipped in final composition
static bool isHFlipped(int32_t transform);
bool mEnabled = false;
// Protect mLayersStatsMap
std::mutex mMutex;
// Hashmap for tracking the frame(layer shape) stats
// KEY is a concatenation of all layers' properties within a frame
// VALUE is the number of times this particular set has been scanned out
std::unordered_map<std::string, uint32_t> mLayerShapeStatsMap;
} // namespace android